Anti-CD19 CAR in PiggyBac Transposon-Engineered T Cells for Relapsed/Refractory B-cell Lymphoma or B-cell Acute Lymphoblastic Leukemia

B-cell Acute Lymphoblastic Leukemia Clinical Trial

Official title: A Phase I Clinical Trial of Anti-CD19 Chimeric Antigen Receptor in PiggyBac Transposon-Engineered T Cells for the Treatment of Patients With Relapsed/Refractory/High-risk B-cell Lymphoma or B-cell Acute Lymphoblastic Leukemia

Status Recruiting

Clinical Trial Summary

Our previous study demonstrated that anti-CD19 chimeric antigen receptor in piggyBac transposon-engineered T cells have strong tumor-killing activity in vitro and therapeutic effects in cell line-derived xenograft models, and no obvious side effects such as neurotoxicity and cytokine storm occurred. Therefore, we want to evaluate the safety and clinical effect of anti-CD19 CAR-T cells in clinical trials.

Clinical Trial Description

Using piggyBac transposon/transposase system to deliver genes into primary human T cells - example expression of CD19 CAR.CARs specific to the human CD19 antigen were used. All CARs contained the scFv against human CD19 (clone FMC-63), The third BBz CD28z CAR consisted of the scFv linked to the intracellular domains of CD28, 4-1BB and CD3z through a CD28 transmembrane domain;

Subjects with relapsed/refractory CD19-positive B-cell Lymphoma or B-ALL can participate if all eligibility criteria are met. All patients received chemotherapy with fludarabine and cyclophosphamide before the infusion of anti-CD19 CAR-T cells.. After the infusion, subjects will accept follow-up for side effects and effect of anti-CD19 CAR-T cells.

Follow-up :

Safety and adverse events (safety and tolerability of anti-CD19 CAR-T cell therapy within 14 days): The number and severity of adverse events, an evaluation of their association with the anti-CD19 CAR-T cell treatment, and the outcome of the adverse events. Possible adverse events include cytokine release syndrome, hypotension, reversible neurotoxicity, hypogammaglobulinemia, etc. CT was used to evaluate B-lymphoma lesions. B-ALL bone marrow samples were collected by bone marrow aspiration to assess minimal residual disease. Flow cytometry was used to detect proportion of T cells, B cells, and NK cells in the blood, and expression of CD3, CD4, CD8, anti-CD19 CAR to determine the effect of anti-CD19 CAR-T treatment. Plasma levels of the cytokines IFN-gamma, TNF-α, IL-2, GM-CSF, IL-10, and IL-6 were also determined.

Data analysis:

Overall survival and progress free survival were determined by the Kaplan-Meier method, using all enrolled patients to determine overall survival.

Study procedures may be performed while hospitalized. ;

Related Conditions & MeSH terms

• B Cell Lymphoma
• B-cell Acute Lymphoblastic Leukemia
• Leukemia
• Leukemia, Lymphoid
• Lymphoma
• Lymphoma, B-Cell
• Precursor Cell Lymphoblastic Leukemia-Lymphoma

• NCT number: NCT04289220
• Study type: Interventional
• Source: Yan'an Affiliated Hospital of Kunming Medical University
• Contact: Zongliu Hou
• Phone: 86-0871-63211157
• Email: hzl579@163.com
• Status: Recruiting
• Phase: Phase 1
• Start date: March 15, 2020
• Completion date: September 15, 2023